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What method of streaming live video is the least taxing on bandwidth in a large enterprise environment？（）
- A、TCP
- B、UDP
- C、HTTP
- D、Multicast
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填空题What is the name of the method that threads can use to pause their execution until signalled to continue by another thread？ （） Fill in the name of the method （do not include a parameter list）.
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单选题You are creating a Windows Communication Foundation (WCF) service that implements the following service contract.[ServiceContract]public interface IOrderProcessing { [OperationContract] void ApproveOrder(int id);}You need to ensure that only users with the Manager role can call the ApproveOrder method. What should you do?（）A
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单选题What can cause a thread to become non-runnable？（）A
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单选题What is a method by which an IP interface can be assigned to a virtual router in a PPP over ATM environment？（）A
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